According to experts, there are currently 100 swarms across Madagascar, made up of about 500 billion ravenous locusts.
They get through around 100,000 tonnes of vegetation every single day.
"They can create a lot of damage, they eat the pastures, and then also the rice and the corn, which is about to be harvested," said Tsitohaina Andriamaroahina from the Ministry of Agriculture.
Andriamaroahina headed a joint scout mission into the plague with UN food agency FAO, ending in April.
"The facts drive me to my knees," he said, frustrated with the scale of the destruction.
Locals often eat the hoppers, which usually occur in moderate numbers in the southern and southwestern parts of the country.
When they became more numerous, the authorities declared a state of emergency in November and tried to kill them -- but the swarms were simply too big.
Then Cyclone Hurana hit Madagascar in February, and the floods created a perfect breeding ground for the locusts.
"Not enough measures were taken, and so we had a locust invasion. In one day, we counted five swarms over a distance of 20 kilometers (12 miles). It's extremely serious," Andriamaroahina added.